AllegroGL is an Allegro add-on that allows you to use OpenGL alongside Allegro.
You use OpenGL for your rendering to the screen, and Allegro for miscellaneous
tasks like gathering input, doing timers, getting cross-platform portability,
loading data, and drawing your textures. So this library fills the same hole
that things like glut do.
AllegroGL also automatically exposes most, if not all, OpenGL extensions
available to user programs. This means you no longer have to manually load
them; extension management is already done for you.